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    <td width="154" colspan="2" align="left"><font face="Verdana, Arial, Helvetica, sans-serif" size="4">If you use lots of extra oxygen, then you will burn all of the fuel, so no pollution will come out of the tailpipe. However, if the engine cylinders are full of air, then there won't be room for much fuel in that mixture, so you won't get much power from your engine. </font></td>
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